A better way for retrieving saved data from 1Password.

The first and last name can now be retrieved even if the user changed the field's title while saving.
A cleaner way of retrieving the sent fields.

We now receive an array with the fields that we sent in order which they were created.
Changing how fields are returned back from the extension.
Merge pull request #30 from AgileBits/task/update-first-and-lastname-retrieval-logic

A better way for retrieving saved data from 1Password.